Regressions in System.Text.Tests.Perf_Encoding and Perf_Encoders

[performanceautofiler]

Run Information

Architecture	arm64
OS	Windows 10.0.25094
Baseline	c9742b32bae35fd546f6ed844d48ccf195626ba7
Compare	06da0fcf4573115aac76f4afd65cdd75592e86e2
Diff	Diff

Regressions in System.Text.Tests.Perf_Encoding

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetBytes - Duration of single invocation	265.26 ns	297.67 ns	1.12	0.69	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Tests.Perf_Encoding*'

Details

Payloads

Baseline
Compare

Histogram

System.Text.Tests.Perf_Encoding.GetBytes(size: 512, encName: "utf-8")

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 297.6709341236771 > 276.9819006858682.
IsChangePoint: Marked as a change because one of 5/31/2022 5:02:26 PM, 6/9/2022 4:58:43 AM falls between 5/31/2022 10:47:41 AM and 6/9/2022 4:58:43 AM.
IsRegressionStdDev: Marked as regression because -5.7326841542386395 (T) = (0 -311.8049826288513) / Math.Sqrt((280.8213364247804 / (11)) + (719.7321643610898 / (34))) is less than -2.016692199226234 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (11) + (34) - 2, .025) and -0.1436918839458107 = (272.63023110132076 - 311.8049826288513) / 272.63023110132076 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

### Run Information

Architecture	arm64
OS	Windows 10.0.25094
Baseline	c9742b32bae35fd546f6ed844d48ccf195626ba7
Compare	06da0fcf4573115aac76f4afd65cdd75592e86e2
Diff	Diff

Regressions in System.Text.Encodings.Web.Tests.Perf_Encoders

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
EncodeUtf8 - Duration of single invocation	96.30 ns	110.85 ns	1.15	0.66	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Encodings.Web.Tests.Perf_Encoders*'

Details

Payloads

Baseline
Compare

Histogram

System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf8(arguments: JavaScript,no escaping required,512)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 110.8524935605853 > 98.68546502434354.
IsChangePoint: Marked as a change because one of 5/31/2022 5:02:26 PM, 6/9/2022 4:58:43 AM falls between 5/31/2022 10:47:41 AM and 6/9/2022 4:58:43 AM.
IsRegressionStdDev: Marked as regression because -7.850515874716991 (T) = (0 -116.21095716185361) / Math.Sqrt((61.42400947097666 / (11)) + (84.2728866224184 / (34))) is less than -2.016692199226234 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (11) + (34) - 2, .025) and -0.23734486762653884 = (93.9196178869422 - 116.21095716185361) / 93.9196178869422 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[DrewScoggins]

Seems related to #68874